Patents by Inventor Chengjun Quan

Chengjun Quan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Pet hair remover
    Patent number: D890530
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: July 21, 2020
    Inventor: Chengjun Quan
  • Pet hair remover
    Patent number: D890531
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: July 21, 2020
    Inventor: Chengjun Quan
  • Skin tag remover
    Patent number: D930158
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: September 7, 2021
    Inventor: Chengjun Quan